Which ones you speaking of in particular?
Don't remember any 100% polyamide ones from the showroom, only MU [which is a blend].
The hooded bomber in MU we have from DRKSHDW this season is pretty true to size, but one could size up if they wanted a slightly roomier fit.
I'm 5'11" and 150lbs, and I wear the S here:
Model on our website is 6'2" and 170lbs and is wearing the M...